sympathetic vasoconstrictor nerve

例句：

1. 1.The sympathetic vasoconstrictor nerve plays a crucial role in the regulation of blood pressure.
   交感血管收缩神经在调节血压方面起着至关重要的作用。
2. 2. During exercise, the sympathetic vasoconstrictor nerve helps to constrict blood vessels, increasing blood flow during physical activity.
   在运动时，交感血管收缩神经有助于收缩血管，增加血液流动，提高运动时的血流速度。
3. 3. A sudden drop in blood pressure can activate the sympathetic vasoconstrictor nerve, causing a surge in heart rate and increased stress response.
   突发性的血压下降可以激活交感血管收缩神经，导致心率激增和应激反应增强。